Home / 20,895.98-28,836.27-11,335.85

Finding the Fourth Proportional to 20,895.98, 28,836.27 and 11,335.85

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Solution

The fourth proportional to 20,895.98, 28,836.27 and 11,335.85 is: 15,643.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.98 : 28,836.27 = 11,335.85 : x
  2. Step 2: Convert to fraction form
    20,895.98/28,836.27 = 11,335.85/x
  3. Step 3: Cross multiply
    20,895.98x = 28,836.27 × 11,335.85
  4. Step 4: Simplify right side
    20,895.98x = 326,883,487.10
  5. Step 5: Solve for x
    x = 326,883,487.10/20,895.98
  6. Step 6: Final answer
    x = 15,643.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.